[TowerTalk] Force 12 C3 series and 100 f00t coax
William E. Handy Jr. - K6LF
wmhandy@pacificnet.net
Mon, 19 Oct 1998 06:46:14 -0700
Yes John,
I should have noted in my original post that my C-3 is connected to 100 feet
of 9913F. (that is how much I needed to get to the shack)
I have had only a few Yagis in my ham experience, this C-3 has the flattest
vswr curves of any antenna I have ever dealt with! Happy happy, joy joy!
William (Bill) E. Handy Jr. - K6LF
"Labour to keep alive in your breast that little spark of celestial
fire, called conscience". -George Washington
> -----Original Message-----
> From: John R Bookout K7JB [mailto:k7jb@uswest.net]
> Sent: Sunday, October 18, 1998 10:48 PM
> To: William E. Handy Jr. - K6LF
> Subject: Re: [TowerTalk] Force 12 C3 series
>
>
> Hi William:
>
> I just received their C-31XR and plan to put it together this coming
> week. I was wondering if you tried the extra length of coax to broaden
> the SWR as Force12 mentions in their assembly manual and if so did you
> find that it does broaden the SWR?
>
> Thanks John
>
> William E. Handy Jr. - K6LF wrote:
> >
> > David,
> > I'll share with you and the TowerTalkians the swr curve of my C-3 that I
> > just put up last weekend at 52 feet very near the side of my
> single story
> > home. I used the default mid-band element lengths. The swr
> was measured
> > with the only instrument I own, a RF Applications P-2000A RF
> Power/V.S.W.R.
> > Indicator. (the meter on my Omni VI seems to agree)
> >
> > 28.0=1.45vswr 28.1=1.35vswr 28.2=1.25vswr 28.3=1.2vswr
> 28.4=1.2vswr
> > 28.5=1.2vswr 28.6=1.25vswr 28.7=1.4vswr 28.8=1.55vswr
> 28.9=1.7vswr
> > 29.0=1.9vswr 29.1=2.0vswr 29.2=2.2vswr 29.3=2.5vswr 29.4=2.6vswr
> > 29.5=2.8vswr 29.6=3.0vswr 29.7=3.1vswr
> >
> > I'm not thrilled that it is up to 3.1 on the high end, but I'm
> very pleased
> > how low it is over the main areas that I use most often! (I
> could shorten
> > some of the 10 meter elements to pull the dip more towards the
> middle of the
> > band) My Ten-Tec is not bothered by the 3.1 anyway!
> >
> > 15 is not over 1.55 at any band edge, and 20 doesn't exceed
> 1.35! This has
> > been the most successful antenna project I've ever experienced.
> >
> > 10 meters is my favorite band and I would not want to narrow
> the band width
> > if I could avoid it and that's why my recommendation would be
> the C-3 over
> > the C-3S.
> >
> > 73 Bill
> >
> > William (Bill) E. Handy Jr. - K6LF
> >
> > "Labour to keep alive in your breast that little spark of celestial
> > fire, called conscience". -George Washington
> >
> > > -----Original Message-----
> > > From: owner-towertalk@contesting.com
> > > [mailto:owner-towertalk@contesting.com]On Behalf Of DavidC
> > > Sent: Sunday, October 18, 1998 7:38 PM
> > > To: K7LXC@aol.com; Swilsonac6@aol.com; towertalk@contesting.com
> > > Subject: Re: [TowerTalk] Force 12 C3 series
> > >
> > >
> > >
> > > > > I guess my question is -- Does anyone with real
> experience with these
> > > antennas
> > > > > have any reason one should buy a C3S instead of a full size C3
> > > (except the
> > > > > slightly narrower 10M bandwith) ?? Swilsonac6@aol.com
> > > > For all intents and purposes, it's the same antenna but with less
> > > > turning radius. The C-3SS was the result of trying to
> shrink the C-3.
> > > They all work FB.
> > > > Cheers, Steve K7LXC
> > >
> > > I was just convinced to pass on a nice used C3S because I was
> told by my
> > > Elmer that boom length is critical to gain and the C3S is way
> too short to
> > > claim gain close to the C3 ... I suppose this will stir up
> some sort of
> > > hornet's nest about the boom length issue ... go for it, as
> always it is
> > > certain to be a wonderful education ... and I will shut up and
> > > just read.
> > > 73, DavidC AA1FA
> > >
> > >
> > > --
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> > >
> >
> > --
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> --
> Best 73's
> John K7JB
>
> E-Mail: k7jb@ptld.uswest.net
> Packet: K7JB @ K7JB.nwor.or.usa.na
> HARDWARE:
>
> Collins S-Line:
> 32S-3A S/N 30801
> 75S-3C S/N 30644
> 312B-4 S/N
> 30l1 S/N
> 75A4 S/N 5445
>
> Home Brew:
> 4-1000A Amplifier S/N 1
>
> Military:
> R-390/URR COLLINS S/N 4651
> R-390A/URR EAC S/N 1475
> R-390A/URR Imperial S/N 2168
> CV-157/URR SSB ADAPTER S/N 40
>
> Hammarlund:
> SP-600-JX-17 S/N 20338 Diversity
>
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